#test function

def add(a,b):
    print "in python function add"
    print "a=" + str(a)
    print "b=" + str(b)
    print "ret=" + str(a+b)
    return

def foo(a):
    print "in python function foo"
    print "a=" + str(a)
    print "ret=" + str(a*a)
    return

def modifystr(a):
    print a*2
